Collected
18 July 2005.
Arizona, United States
Elevation: 1169m.
Georeference protocol: Lat/lon determined by GPS
Environment description: Tan soil.
Number of plants sampled: 105
Comment: Collected by Bureau of Land Management, USA. Interior chaparral. Associated with Acacia greggii, Prosopis velutina, Opuntia sp., Solanum elaeagnifolium, Plantago patagonica, Plagiobothrys arizonicus, Bromus rubens.